Unable to validate RAS license, and status shows up as "Cannot contact licensing server". Unable to reactivate the license from RAS Console.
Parallels RAS servers were relocated to Malta, and most probable reason is that it is blocked by Geo IP or firewall.
Following FQDNs need to be added to exclusions list and connection over port 443 should be possible:
account.parallels.com license.parallels.com ras.parallels.com s.parallels.com